Frame formwork element and frame formwork system, and use of a strip in a frame formwork system

ABSTRACT

The invention relates to a frame formwork element (100) for a frame formwork system (300) for producing a wall section in concrete construction, comprising:a plurality of, in particular four, edge profiles (101) which form a frame (102) having a frame inner side (103) and a frame outer side (104),wherein at least one edge profile (101) is a hollow profile and in the cross-section has a profile section on the frame inner side with a groove-forming fastening corrugation (107) and a profile section on the frame outer side with a groove-forming reinforcing corrugation (105), wherein in the cross-section of the edge profile (101) the fastening corrugation (107) and the reinforcing corrugation (105) lie opposite one another and have the same shape. The invention further relates to a frame formwork system (300) having such a frame formwork element (100) and a batten (200). Moreover, use of a batten (200) in a framed formwork system (300) is proposed.

REFERENCE TO RELATED APPLICATIONS

The present application claims the priority of the German patent application No. 10 2020 123 075.3, filed on 3 Sep. 2020, which is incorporated in its entirety by reference into the present document.

The invention relates to a frame formwork element for a frame formwork system for producing a wall section in concrete construction. Furthermore, the invention relates to a frame formwork system having at least one frame formwork element in accordance with the invention and at least one batten for producing a wall profile in concrete construction. Moreover, the invention relates to use of a batten in a frame formwork system.

PRIOR ART

The printed patent specification DE 39 11 301 C1 discloses as an example a framework element for concrete formworks which comprises a frame formwork having a formwork skin and a facing formwork which is attached to the formwork skin of the frame formwork. In this manner, the facing formwork forms a type of second formwork skin. A facing formwork which is used as a second formwork skin, as described in the printed patent specification DE 39 11 301 C1, can be provided but is not mandatory.

The frame formwork which is described in the printed patent specification DE 39 11 301 C1 comprises a circumferential frame for receiving the (first) formwork skin. The formwork skin is placed on the frame outer side so that the end sides of the formwork skin are encompassed by a circumferential edge of the frame. Preferably, the circumferential edge closes in a flush manner with the surface of the formwork skin. Supporting struts can be arranged between the limbs of the frame so as to support the formwork skin in its planar extent. This frame can have a circumferential groove-forming fastening corrugation on the inner side for connecting the supporting struts to said frame. In addition, the fastening groove can be used to receive clamps for connecting two adjacent frame formwork elements. In the case of a frame formwork of the aforementioned type, the formwork skin can be produced from wood, synthetic material or a composite material which comprises at least one of these materials. Hollow profiles of metal, in particular steel, are used for producing the frame. However, a light metal, such as for example aluminum, can also be used. In this case, the selection of the material and/or the dimensioning of the hollow profile depend inter alia on the size of the frame formwork.

Thin-walled hollow profiles are regarded as advantageous for producing a frame formwork since these help to save material and costs. At the same time, the weight of the frame formwork reduces, so that this is easier to handle. However, the use of thin-walled hollow profiles is accompanied by the risk that, when used in the intended manner, the frame formwork does not withstand the high loading. For example, the risk of buckling under a load is greater in the case of a thin-walled hollow profile.

When a frame formwork is used as intended for producing a wall section in concrete construction, at least two frame formwork elements are usually set up parallel and at a predetermined distance from one another and/or are coupled to at least one adjacent frame formwork element by means of clamps. When fresh concrete is poured between two parallel frame formwork elements, it must be ensured that the concrete does not press them apart. The frame formwork elements must therefore be fixed, especially in the area of their base point. In the case of two adjacent frame formwork elements, the coupling area in particular must withstand the pressure of the concrete.

Based on the aforementioned prior art, the object of the present invention is to increase the load-bearing capacity of a frame formwork, and namely both the load-bearing capacity of the individual frame formwork element and the load-bearing capacity of the connecting and/or coupling areas of the frame formwork element.

So as to achieve the object, the frame formwork element having the features of claim 1 and the frame formwork system having the features of claim 9 are proposed. Advantageous developments of the invention can be found in the respective subordinate claims. The object is further achieved by the proposed use of a batten in a frame formwork system in accordance with the invention.

DISCLOSURE OF THE INVENTION

The frame formwork element which is proposed for a frame formwork system for producing a wall section in concrete construction comprises a plurality of edge profiles which form a frame having a frame inner side and a frame outer side. At least one edge profile is a hollow profile and in the cross-section has a profile section on the frame inner side having a groove-forming fastening corrugation and a profile section on the frame outer side having a groove-forming reinforcing corrugation. In the cross-section of the edge profile, the fastening corrugation and the reinforcing corrugation lie opposite one another other and have the same shape.

The frame of the frame formwork element can in particular have four edge profiles, two vertical edge profiles, a lower edge profile and an upper edge profile, so that the frame forms a quadrilateral, in particular a rectangle. A plurality of frame formwork elements of the same type can thus be set up next to one another and coupled in a simple manner in order to enable the production of a wall section in a predetermined length.

In the hollow profile design, the at least one edge profile of the proposed frame formwork element already has a high degree of inherent rigidity.

To further increase the load-bearing capacity, in particular to minimize the risk of buckling, the at least one edge profile comprises a groove-forming reinforcing corrugation in addition to a groove-forming fastening corrugation. While the fastening corrugation is formed on the frame inner side, the reinforcing corrugation is located on the frame outer side, i.e. in a profile section which extends essentially perpendicular to the plane of the frame or perpendicular to the plane of the formwork skin. The reinforcing corrugation thus increases the load-bearing capacity of the edge profile in the main load direction of the frame formwork element. The same applies moreover for the fastening corrugation, so that it also contributes to the reinforcing of the edge profile.

The groove-forming reinforcing corrugation lies opposite the groove-forming fastening corrugation in the cross-section of the edge profile. This means that the reinforcing corrugation is arranged at the same “height” in the direction of the profile depth as the fastening corrugation. In this manner, the two corrugations form a kind of constriction of the profile cross-section in the cross-section of the edge profile. This has an advantageous effect on the load distribution and/or load transfer when the frame formwork element is loaded perpendicular to the frame plane or in the main load direction.

The groove-forming reinforcing corrugation also has the same shape in the cross-section of the edge profile as the groove-forming fastening corrugation. This measure also has an advantageous effect on the load distribution and/or load transfer when the frame formwork element is loaded perpendicular to the frame plane or in the main load direction. The reinforcing corrugation and the fastening corrugation can have, for example, a V, U or trapezoidal shape in the cross-section of the edge profile. Such shapes can be produced in a simple manner during the production of the edge profile, for example in a forming process.

Due to the increased load-bearing capacity or the minimized risk of buckling, the wall thickness of the edge profile can subsequently be reduced. This means that a particularly thin-walled hollow profile can be used as an edge profile. Alternatively or additionally, the profile depth of the edge profile can be reduced. The profile depth corresponds to the dimension of the edge profile perpendicular to the plane of the frame or the formwork skin. Both measures—alone or in combination—help to reduce the weight of the frame formwork element and thus make it easier to handle. Moreover, material is saved in the production of the frame formwork element, so that the production costs are reduced.

The hollow profile is preferably produced from metal, in particular steel, since steel has a high strength, so that the robustness of the frame formwork element is further increased.

The provision of a groove-forming reinforcing corrugation on the frame outer side in the at least one edge profile of the frame formwork element in accordance with the invention also has further advantages.

For example, the groove-forming reinforcing corrugation—analogous to the tongue-and-groove principle—can be used as a connecting and/or coupling element. This is possible since the groove-forming reinforcing corrugation is provided on the frame outer side or in a profile section of the edge profile which forms the frame outer side. The use of the groove-forming reinforcing corrugation as a connecting and/or coupling element simplifies the fixing of the frame formwork element, for example in the area of the base point. Furthermore, the lateral connection of the frame formwork element and/or the coupling of the frame formwork element to another frame formwork element can be simplified. At the same time, the load-bearing capacity of the frame formwork element increases in these connecting or coupling areas, since the tongue-and-groove principle enables a positive fit to be achieved which acts in the main load direction of the frame formwork element.

Preferably, the groove-forming fastening corrugation and the groove-forming reinforcing corrugation each extend in the longitudinal direction of the profile over the entire length of the edge profile. The reinforcing effect is thus achieved over the entire length of the edge profile. In addition, the connecting or coupling possibilities described above are created over the entire length of the edge profile.

In development of the invention, it is proposed that in the profile section on the frame outer side the at least one edge profile which comprises the groove-forming reinforcing corrugation comprises at least one further groove-forming reinforcing corrugation and said groove-forming reinforcing corrugation extends parallel to the first groove-forming reinforcing corrugation in the longitudinal direction of the profile. The further reinforcing corrugation not only contributes to further reinforcing the edge profile and thus to an increase in the load-bearing capacity of the frame or the frame formwork element, but at the same time increases the connecting or coupling possibilities of the frame formwork element. Preferably, accordingly at least two edge profiles which are arranged at an angle to one another or lying opposite one another, preferably all edge profiles of the frame, have a second groove-forming reinforcing corrugation.

The two parallel groove-forming reinforcing corrugations can have the same shape or different shapes in the cross-section of the edge profile. In particular, the two groove-forming reinforcing corrugations can have a V, U and/or trapezoidal shape in the cross-section of the edge profile. For example, the first groove-forming reinforcing corrugation can have a trapezoidal shape in the cross-section of the edge profile, while the second groove-forming reinforcing corrugation has a V-shaped cross-section.

Advantageously, the shape of the two groove-forming reinforcing corrugations differs in the cross-section of the edge profile. Due to the different shape of the groove-forming reinforcing corrugations, defined connecting or coupling geometries can be created, which are characteristic for a system which comprises further system components in addition to the frame formwork element in accordance with the invention. The defined connecting or coupling geometries ensure the compatibility of the system components. A corresponding frame formwork system is described in more detail below.

Preferably, not only one edge profile of the frame formwork element comprises a groove-forming fastening corrugation and a groove-forming reinforcing corrugation, but at least two edge profiles. This can be two edge profiles which are arranged at an angle to one another, for example a vertical and a lower edge profile, or two edge profiles which lie opposite one another, for example two vertical edge profiles.

The groove-forming fastening corrugations of two opposite-lying edge profiles can be used, for example, to fasten struts or rungs, which are arranged in the plane of the frame, to the frame. Analogous to the tongue and groove principle, the struts or rungs can each have a geometry which engages in the fastening groove at the end, so that a positive fit with the frame is achieved. The positive fit acts in the main load direction of the frame formwork element, so that the formwork skin which is resting on the struts or rungs is optimally supported. Moreover, the groove-forming fastening corrugations can be used to receive clamps for connecting two adjacent frame formwork elements.

The groove-forming reinforcing corrugations of two edge profiles which are at an angle to one another or lie opposite one another can be used in particular to form a lateral and/or lower connection of a frame formwork element and/or to couple two adjacent frame formwork elements.

Preferably, all frame-forming edge profiles of the frame formwork element comprise a groove-forming fastening corrugation and a groove-forming reinforcing corrugation, so that a circumferential fastening corrugation is formed on the frame inner side and a circumferential reinforcing corrugation on the frame outer side. The circumferential fastening corrugation enables both horizontally and vertically extending struts or rungs to be fastened. The circumferential reinforcing corrugation increases the connecting or coupling possibilities. In addition, the entire frame is reinforced by means of the circumferential corrugation.

Furthermore, all frame-forming edge profiles of a frame formwork element are preferably produced from the same hollow profile. All edge profiles of a frame thus have the same profile cross-section.

In a preferred embodiment of the invention, the frame of the proposed frame formwork element comprises four edge profiles which have the same profile cross-section and are connected to one another in such a manner that the at least one reinforcing corrugation which is arranged on the frame outer side is formed circumferentially. To form at least one circumferential reinforcing corrugation, the edge profiles can be connected to one another, for example, by means of a miter.

The proposed frame formwork element preferably furthermore comprises:

-   -   a formwork skin which is resting on the edge profiles and/or     -   a plurality of rungs which are arranged in the plane of the         frame, extend perpendicular to one another and/or to the edge         profiles and are connected to the edge profiles.

The formwork skin can—as already mentioned at the beginning—be enclosed on the end side by an edge of the frame. The edge protects the end side of the formwork skin from damage. Preferably, the edge of the frame is flush with the formwork skin. The plurality of rungs which are arranged in the plane of the frame—if they are provided—support the formwork skin. In this manner, comparatively large, in particular large-area, frame formwork elements can be manufactured. The rungs can also comprise one or more tie holes for receiving ties. With the aid of a tie, two frame formwork elements which are arranged in parallel can be braced together in the surface so that the concrete which is filled between the two frame formwork elements does not press them apart. In this manner, the tie promotes a high degree of evenness of the wall section which is to be produced.

The frame formwork system which is furthermore proposed for producing a wall section in concrete construction comprises at least one frame formwork element in accordance with the invention and at least one batten for arranging on the frame outer side on an edge profile of the frame of the frame formwork element. The additionally provided batten increases the application possibilities of the frame formwork system. For example, the batten enables length or height compensation. Moreover, the batten can be used as a connecting and/or coupling element. The batten of the proposed frame formwork system comprises at least one projecting geometry which can be brought into engagement with the at least one groove-forming reinforcing corrugation of the edge profile of the frame formwork element. This means that the projecting geometry of the batten and the groove-forming reinforcing corrugation of the edge profile interact according to the tongue-and-groove principle. A positive fit is thus achieved between the batten and the frame formwork element, which increases the load-bearing capacity of the connecting or coupling area in the main load direction.

If the groove-forming reinforcing corrugation of the frame of the frame formwork element is designed to be circumferential, the batten can be arranged at any point on the frame outer side. This means that the batten can be arranged laterally next to, below or above the frame of the frame formwork element and positively connected to it. A laterally arranged batten can be used in particular for coupling two adjacent frame formwork elements. In addition, a length compensation can be created with the aid of this batten. Moreover, radii can be represented. With the aid of a compensation batten which is arranged under a frame of a frame formwork element, the frame formwork element can be precisely positioned and aligned.

The at least one batten can thus fulfill a variety of different tasks. Depending on the respective task to be fulfilled, the batten can thus be a connecting, coupling, compensating, positioning and/or buckling batten.

Preferably, the at least one projecting geometry of the batten extends in the longitudinal direction of the batten. Furthermore, preferably, the projecting geometry extends over the entire length of the batten. The positive fit with the corresponding edge profile of the frame formwork element is thus also achieved over the entire length of the batten, which further increases the load-bearing capacity of a connecting or coupling area which is formed with the aid of the batten.

Alternatively or additionally, it is proposed that the at least one projecting geometry has in the cross-section of the batten an outer contour which is adapted to an inner contour of the at least one groove-forming reinforcing corrugation of the edge profile. Preferably, the cross-sectional shape of the projecting geometry of the batten is designed to be the opposite of the cross-sectional shape of the groove-forming reinforcing corrugation of the edge profile. In this manner, a high fitting accuracy is achieved in the area of the positive fit. This in turn counteracts a relative movement of the batten with respect to the edge profile.

As an additional measure, it is proposed that the batten comprises on the side which faces away from the projecting geometry at least one groove-forming reinforcing corrugation, which extends in the longitudinal direction of the batten, for receiving a projecting geometry of a further batten and/or a sealing element. The batten thus comprises two connection sides, wherein the first connection side has a projecting geometry and the second connection side comprises a groove-forming reinforcing corrugation. The projecting geometry and the groove-forming reinforcing corrugation are preferably arranged lying opposite one another or at the same “height” in the cross-section of the batten, so that the batten can be connected to a large number of similar battens by simply plugging them into one another. In this manner, a positive fit which is effective in the main load direction is achieved at the same time between the battens.

In order to create a cavity for receiving a sealing element, two battens having at least one groove-forming reinforcing corrugation each can be arranged and aligned with one another in such a manner that the respective groove-forming reinforcing corrugations lie opposite one another. A corresponding cavity can also be created—alternatively or additionally—between a batten and an edge profile of a frame formwork element, since said edge profile also comprises at least one groove-forming reinforcing corrugation on the frame outer side.

Advantageously, the batten is a hollow profile. In the design as a hollow profile, the batten per se already has a high degree of inherent rigidity. In addition, the at least one projecting geometry and—if provided—the at least one groove-forming reinforcing corrugation which extends in the longitudinal direction of the batten further increase the inherent rigidity. Advantageously, the hollow profile is produced from metal, in particular steel, since steel is particularly strong and therefore robust.

Preferably, the batten comprises two oppositely profiled side faces and two end faces which connect the side faces. The oppositely profiled side faces form the connecting faces. They determine the depth of the batten. This preferably corresponds to the profile depth of the frame-forming edge profiles of the frame formwork element, so that the batten can be arranged in such a manner that it is flush with the frame of the frame formwork element. The two end faces of the batten define the width of the batten, whereby the width can vary. This means that in the cross-section of the batten, the two end faces can be of the same or different length. If the two end faces have the same length, the batten has a constant width when the at least one projecting geometry and the groove-forming reinforcing corrugation—if provided—are disregarded. If the two end faces have different lengths or the batten has a varying width, the latter can be used to couple two frame formwork elements which are arranged at an angle with respect to one another. This means that they do not extend in alignment, but rather at an angle <180° or at an angle >180°. If a plurality of battens of varying widths are used for coupling two frame formwork elements, the formwork skin can achieve a curvature which consists of a plurality of bends in the plane. Such a batten can therefore also be referred to as a “buckling batten”.

If a plurality of battens are used to couple two frame formwork elements, they do not necessarily have to be of the same design. This means that a batten having a varying width can also be coupled to a batten which has a constant width. Moreover two battens can be coupled to one another, each of which has a constant width but whose widths differ from one another. By providing battens of different widths, they can be easily exchanged and/or combined with one another as desired. This results in a modular system, which increases the variability of the frame formwork system. In particular, the battens of different widths can be used to compensate the length. The battens having different widths can therefore be referred to as “compensating battens”. A combination of compensating battens and buckling battens can also be used.

According to a preferred embodiment, the proposed frame formwork system therefore comprises a plurality of battens which can be brought into engagement with one another and with at least one edge profile of the frame of the frame formwork element and said battens preferably differ from one another in terms of their widths. Alternatively or additionally, it is proposed that at least one batten has a varying width.

The at least one batten of the proposed frame formwork system can furthermore be used for positioning a frame formwork element. For this purpose, the batten is fixed to the existing substrate or base so that the at least one projecting geometry points upwards. This means that the dimension which is previously defined as the width now corresponds to the height of the batten. When a frame formwork element is placed on the batten, the projecting geometry is brought into engagement with the at least one groove-forming reinforcing corrugation of the lower horizontally extending edge profile of the frame formwork element. In this manner, the batten determines the position of the frame formwork element. The batten can therefore also be referred to as a “positioning batten”. The positive fit which is achieved by means of the projecting geometry of the batten not only facilitates the positioning or alignment of the frame formwork element, but also fixes the frame formwork element in the area of its base point.

In development of the proposed frame formwork system, this therefore comprises at least one batten for positioning a frame formwork element. In order to fix the batten on the base side, it can have at least one opening for receiving a fastening means, for example a screw or a bolt. In particular, the opening can be designed as an elongated hole to enable precise alignment of the batten. Preferably, the opening is arranged in a lowered area of a projecting geometry of the batten, so that the fastening means does not protrude beyond the projecting geometry. This is because in this case the fastening means could hinder the positive fit of the batten having the edge profile of the frame formwork element which is to be positioned. The fact that the opening is arranged in a lowered area of a projecting geometry of the batten means that the original height of the batten is also retained as a load-bearing cross-section.

Furthermore, the proposed frame formwork system preferably comprises a tension strap which is or can be fastened to the batten with the aid of the fastening means and which can be fastened at the other end in the same manner to a further, parallel batten, so that a distance between the two battens can be predetermined by means of the tension strap. The distance between the two battens also defines a distance between the two frame formwork elements which are positioned with the aid of the two battens. The distance preferably corresponds to the thickness of the wall section which is to be produced. During the concreting of the wall section, the tension strap prevents the fresh concrete which is filled between the two frame formwork elements from pressing the frame formwork elements and/or the battens apart.

Various possibilities thus arise for using a batten having at least one projecting geometry in a frame formwork system in accordance with the invention, in particular for positioning a frame formwork element and/or for coupling two frame formwork elements. For this purpose, the batten is arranged on the frame outer side on an edge profile of the frame formwork element and the at least one projecting geometry is brought into engagement with a groove-forming reinforcing corrugation of the edge profile. In a corresponding use, a connecting, coupling, compensating, positioning and/or buckling batten can be used.

Preferred embodiments of the invention are explained in more detail below with reference to the accompanying drawings. In the drawings:

FIG. 1A shows a perspective view of a frame formwork element in accordance with the invention,

FIGS. 1B-1D each show a cross-section through an edge profile of the frame formwork element of FIG. 1A,

FIGS. 2A-2C each show a cross-section and a sectional view of a batten for a frame formwork system in accordance with the invention, wherein the battens differ in terms of their widths,

FIG. 2D shows a cross-section through the battens of FIGS. 2A-2C in a coupled state,

FIG. 3A shows a view of a first frame formwork system in accordance with the invention,

FIG. 3B shows a horizontal section through the frame formwork system of FIG. 3A,

FIG. 3C shows an enlarged section of FIG. 3B in the area of the coupling of two frame formwork elements,

FIGS. 4A-4D each show a cross-section and a sectional view of a batten for a frame formwork system in accordance with the invention,

FIG. 5A shows a horizontal section through a second frame formwork system in accordance with the invention,

FIG. 5B shows a horizontal section through a third frame formwork system in accordance with the invention,

FIG. 6A shows a perspective view of a batten for positioning a frame formwork element,

FIG. 6B shows an enlarged section of FIG. 6A,

FIG. 6C shows a perspective view of a fastening means,

FIG. 7 shows a perspective view of the batten in combination with another batten for positioning a frame formwork element,

FIG. 8A shows a perspective view of two battens for positioning a frame formwork element and which are connected by means of tension straps,

FIG. 8B shows a perspective view of a tension strap,

FIGS. 8C-8D each show an enlarged section of FIG. 8A,

FIG. 9A shows a perspective view of two battens for positioning a frame formwork element and which are connected by means of tension straps,

FIG. 9B shows a perspective view of a locking bolt,

FIGS. 9C-9E each shows a cross-section through a batten during the assembly of a locking bolt,

FIG. 10 shows a perspective view of a frame formwork system in accordance with the invention having a plurality of frame formwork elements which are positioned by means of battens,

FIG. 11 shows a perspective view of a further frame formwork system in accordance with the invention,

FIG. 12 shows a perspective view of a frame formwork system in accordance with the invention having a push-pull prop and having two horizontally arranged battens for stacking the system,

FIG. 13 shows a side view of the frame formwork system of FIG. 12 and

FIG. 14 shows a perspective view of a frame formwork system in accordance with the invention having frame formwork elements which are arranged one above the other.

DETAILED DESCRIPTION OF THE DRAWINGS

FIG. 1A shows a preferred embodiment of a frame formwork element 100 which comprises a frame 102, which is formed from four edge profiles 101, and a web bracing of horizontally and vertically extending rungs 108. Each of the four edge profiles 101 is designed as a hollow profile. All edge profiles 101 also have the same cross-section. This is shown enlarged in FIGS. 1B to 1D for the upper edge profile 101 (FIG. 1B), the two lateral edge profiles 101 (FIG. 1C) and the lower edge profile 101 (FIG. 1D). Accordingly, all four edge profiles 101 have an essentially rectangular cross-section with a kind of collar as edge protection 111 for a formwork skin 110 (analogous to FIG. 3C). Furthermore, each edge profile 101 comprises a first profile section having a groove-forming fastening corrugation 107 which extends in the longitudinal direction of the profile and a second profile section having two groove-forming reinforcing corrugations 105, 106 which also extend in the longitudinal direction of the profile. The first reinforcing corrugation 105 lies exactly opposite the fastening corrugation 107 and also has the same cross-sectional shape. This is trapezoidal. The other reinforcing corrugation 106, on the other hand, has a V-shaped cross-section.

The edge profiles 101 of the frame 102 are arranged in such a manner that the profile sections having the one fastening corrugation 107 form a frame inner side 103 and the profile sections having the two reinforcing corrugations 105,106 form a frame outer side 104 of the frame 102. Since the edge profiles 101 are connected by means of a miter 112, a circumferential fastening corrugation 107 is formed on the frame inner side and two circumferential reinforcing corrugations 105, 106 are formed on the frame outer side.

The frame formwork element 100 shown in FIG. 1A can be combined with a batten 200 in a frame formwork system 300 (see FIGS. 3A to 3C). A preferred embodiment of a batten 200 of different widths b1-b3 is shown in FIGS. 2A to 2D. The battens 200 are also designed as hollow profiles, analogous to the previously described edge profiles 101. They have two profiled side faces 205, 206 and two end faces 207, 208 which connect the side faces 205, 206. The cross-sectional shape of the battens 200 shown is thus essentially rectangular, if the profiling of the side faces 205, 206 is disregarded. It is noticeable that the profiling of the side face 206 corresponds to the profiling of the frame outer side 104 of the frame 102 of the previously described frame formwork element 100, and the profiling of the side face 205 is formed in exactly the opposite manner. This means that the battens 200 can be coupled to one another as well as to the frame 102 of the frame formwork element 100. When two battens 200 are coupled, projecting geometries 201, 202 on the side face 205 engage in the groove-forming reinforcing corrugations 203, 204 of the coupled batten 200, so that a positive fit is achieved. Such a coupling of the three battens 200 shown can be seen in FIG. 2D. Similarly, each of the battens 200 shown can be coupled to the frame 102 of the frame formwork element 101 of FIG. 1A.

FIGS. 3A to 3C show a first frame formwork system 300 in accordance with the invention, having two frame formwork elements 100 according to FIG. 1A and three battens 200 according to FIG. 2D. The two frame formwork elements 100 are coupled to one another by means of the three battens 200 (see in particular FIGS. 3B and 3C). In this manner, in addition to the coupling of the frame formwork elements 100, a length compensation can be achieved at the same time. While the left-hand batten 200 engages positively in the edge profile 101 of the left-hand frame formwork element 100, the right-hand batten 200 forms two cavities 209 together with the edge profile 101 of the right-hand frame formwork element 100 (see in particular FIG. 3C). Sealing elements (not shown) can be inserted into these cavities 209 so that no water can escape via the joint area. At the same time, a coupling can be achieved by means of the sealing elements, which counteracts a relative movement of the coupled elements.

As can be seen in particular in FIG. 3C, the frame formwork elements 100 each have a formwork skin 110 which rests on the respective frame 102 and is flush with the edge protection 111 of the edge profiles 101 of the frame 102.

FIGS. 4A to 4D show further battens 200 for a frame formwork system 300 according to FIG. 3A. These differ from one another by different widths b1 to b4, wherein each batten 200 has a variable width over the entire depth f of the batten. In the case of the batten 200 shown in FIG. 4A, the width b1 increases over the depth f, so that it has a width b1+ at the other end (the projecting geometries 201, 202 and the groove-forming reinforcing corrugations 203, 204 are not taken into account when determining the width). The batten 200 of FIG. 4C is designed analogous to the batten 200 of FIG. 4A, but has a smaller overall width b3, which increases to the width b3+. The opposite is true for the batten 200 in FIG. 4B and FIG. 4D. Here the width b2 or b4 decreases to a width b2− or b4−. With the aid of the battens 200 shown, bucklings and/or curvatures can be created in the plane of the formwork skin 110, as shown as an example in FIGS. 5A and 5B. The course of the wall section which is to be produced can be influenced in this manner. In particular, a convex course (FIG. 5A) or a concave course (FIG. 5B) can be specified. Instead of the two battens 200 shown, only one or more than two battens 200 can be used. Furthermore, different battens 200 can be used.

Another preferred batten 200 for a frame formwork system 300 in accordance with the invention can be seen in FIGS. 6A and 6B. The batten 200 is used for positioning a frame formwork element 100 and is arranged for this purpose under the frame formwork element 100 or on the respective substrate. Due to the changed position of the batten 200, the original width now corresponds to the height of the batten. The batten 200 is placed on the substrate with the projecting geometries 201, 202 pointing upwards and is fixed in the substrate with the aid of fastening means 211 in the form of screws (see FIG. 6C). For receiving the fastening means 211, the batten 200 comprises a lowered area 212 in the area of the projecting geometry 201 with an opening 210 in the form of an elongated hole (see in particular FIG. 6B). The lowered area 212 ensures that the fastening means 211 does not protrude beyond the projecting geometry 201 of the batten 200. Since this would impair the positive fit between the batten 200 and the frame formwork element 100.

As shown as an example in FIG. 7 , two such battens 200 can be arranged in a mirrored arrangement, at a distance from one another on the substrate and fixed. The distance is determined by the thickness of the wall section which is to be produced. A frame formwork element 100 can then be placed on each of the two battens 200 so that the projecting geometries 201, 202 of the battens 200 engage in the corresponding groove-forming reinforcing corrugations 105, 106 of the respective frame formwork element 100. In this manner, a positive fit is achieved between the battens 200 and the frame formwork elements 100, which prevents the concrete placed between the two frame formwork elements 100 from pressing them apart when concreting the wall section which is to be produced. However, this presupposes that the battens 200 are not pressed apart either.

To counteract this, the two battens 200 can be connected by means of tension straps 213 -as shown as an example in FIGS. 8A to 8D. The tension straps 213 each have an opening 215 in the form of an elongated hole at their two ends for receiving locking bolts 214 (see FIG. 8B), by means of which the tension straps 213 can be connected to the battens 200. Instead of the locking bolt 214, the fastening means 211 in the form of a screw can also be used, with the aid of which the batten 200 can be anchored in the substrate at the same time.

A preferred locking bolt 214 is shown as an example in FIG. 9B. It comprises an elongated head 216 which is aligned transversely to the longitudinal direction of the batten 200 when it is inserted into the opening 215 of the tie strap 213 and is then twisted so that it is aligned parallel to the longitudinal direction of the batten 200. The locking bolt 214 is inserted analogous to the fastening means 211 into an opening 210 of a lowered area 212 of the batten 200 (see FIG. 9A). This ensures that the locking bolt 214 does not also protrude beyond the projecting geometry 201 of the batten 200. Rotating the locking bolt 214 so that the elongated head 216 is aligned parallel to the longitudinal direction of the batten 200 further ensures that it remains completely behind the projecting geometry 201 (see FIGS. 9C to 9E). The positive fit between the batten 200 and the frame formwork element 100 is therefore not compromised.

FIG. 10 shows another frame formwork system 300 for producing a wall section in concrete construction. The frame formwork elements 100 are each positioned by means of battens 200 on the base side and held at a distance which corresponds to the thickness of the wall section which is to be produced. As previously described, the battens 200 are fixed to the substrate by means of fastening means 211 in the form of screws. The distance between the battens 200 is maintained by tension straps 213, each of which is connected to the battens 200 by means of locking bolts 214. Neither the fastening means 211 nor the locking bolts 214 project beyond the projecting geometries 201 of the battens 200, so that these engage positively in the corresponding groove-forming reinforcing corrugation 105 of the respective frame formwork element 100. The frame formwork elements 100 are thus positioned over the base-side battens 200 and held at a distance.

A plurality of tie holes 109 are provided in the vertical rungs 108 of the frames 102 of the frame formwork elements 100. These are also formed in the respective formwork skin 110. Thus, anchor tie rods 302 can be inserted into the tie holes 109 and enable two opposing frame formwork elements 100 to be braced together (see as an example FIG. 12 ).

In addition to the battens 200 for positioning the frame formwork elements 100, the frame formwork system 300 shown in FIG. 10 also comprises battens 200 for coupling two adjacent frame formwork elements 100. In this case, the coupling is achieved with the aid of two coupled battens 200 of different widths.

FIG. 11 shows another framed formwork system 300, which largely corresponds to that of FIG. 10 . Here, however, two framed formwork elements 100 are coupled by means of three coupled battens 200 of different widths.

As shown as an example in FIG. 12 , after positioning the frame formwork elements 100 on the battens 200, the frame formwork elements 100 can be vertically aligned and additionally supported with the aid of a push-pull prop 301. Furthermore, an anchor tie rod 302 is inserted respectively into a centrally arranged tie hole 109 of a frame formwork element 100 and said anchor tie rod is used to absorb horizontal loads. Further anchor tie rods 302 can be omitted, since both the base-side battens 200 are connected by means of tension straps 213, as well as further battens 200 which are arranged on the frame formwork elements 100 (see in particular FIG. 13 ).

FIG. 14 shows a frame formwork system 300 which has been stacked. This means that the frame formwork elements 100 are not only arranged next to one another, but also one above the other. For coupling, in turn battens 200 are used, whereby two battens 200 are arranged one above the other and coupled with the frame formwork elements 100. The lower batten 200 is connected to an opposite-lying lower batten 200 by means of tension straps 213, the upper batten 200 is connected in a corresponding manner to an opposite-lying upper batten 200. With the aid of the upper batten 200, the frame formwork element 100 which is placed thereon can be positioned and held. The stacked area is vertically aligned and supported by means of a further push-pull prop 301.

LIST OF REFERENCE NUMERALS

100 Frame formwork element

101 Edge profile

102 Frame

103 Frame inner side

104 Frame outer side

105 Reinforcing corrugation

106 Reinforcing corrugation

107 Fastening corrugation

108 Rung

109 Tie hole

110 Formwork skin

111 Edge protection for formwork skin

112 Miter

200 Batten

201 Geometry

202 Geometry

203 Reinforcing corrugation

204 Reinforcing corrugation

205 Side face

206 Side face

207 End face

208 End face

209 Cavity

210 Opening

211 Fastening means

212 Lowered area

213 Tension strap

214 Locking bolt

215 Opening

216 Head

300 Frame formwork system

301 Push-pull prop

302 Anchor tie rod 

1. A frame formwork element (100) for a frame formwork system (300) for producing a wall section in concrete construction, comprising: a plurality of, in particular four, edge profiles (101) which form a frame (102) having a frame inner side (103) and a frame outer side (104), wherein at least one edge profile (101) is a hollow profile and in the cross- section has a profile section on the frame inner side having a groove-forming fastening corrugation (107) and a profile section on the frame outer side with a groove-forming reinforcing corrugation (105), wherein in the cross-section of the edge profile (101) the fastening corrugation (107) and the reinforcing corrugation (105) lie opposite one another and have the same shape.
 2. The frame formwork element (100) as claimed in claim 1, wherein the groove-forming fastening corrugation (107) and the groove-forming reinforcing corrugation (105) each extend in the longitudinal direction of the profile over the entire length of the edge profile (101).
 3. The frame formwork element (100) as claimed in claim 1 or 2, wherein in the profile section on the frame outer side the at least one edge profile (101) comprises at least one further groove-forming reinforcing corrugation (106) which extends parallel to the first groove-forming reinforcing corrugation (105) in the longitudinal direction of the profile.
 4. The frame formwork element (100) as claimed in one of the preceding claims, wherein at least one groove-forming reinforcing corrugation (105, 106) has a V, U or trapezoidal shape in the cross-section of the edge profile (101).
 5. The frame formwork element (100) as claimed in one of the preceding claims, wherein the frame (102) comprises four edge profiles (101) which have the same profile cross-section and are connected to one another in such a way that the at least one reinforcing corrugation (105, 106) which is arranged on the frame outer side is formed circumferentially.
 6. The frame formwork element (100) as claimed in one of the preceding claims, comprising: a plurality of rungs (108) which are arranged on the frame inner side, extend perpendicular to one another and/or to the edge profiles (101) and are connected to the edge profiles (101).
 7. The frame formwork element (100) as claimed in one of the preceding claims, comprising: a formwork skin (110) which rests on the edge profiles (101).
 8. A frame formwork system (300) for producing a wall section in concrete construction, comprising: at least one frame formwork element (100) as claimed in one of the preceding claims, and at least one batten (200) for arranging on the frame outer side on an edge profile (101) of the frame (102) of the frame formwork element (100), wherein the batten (200) has at least one projecting geometry (201, 202) which can be brought into engagement with the at least one groove-forming reinforcing corrugation (105, 106) of the edge profile (101).
 9. The frame formwork system (300) as claimed in claim 8, wherein the at least one projecting geometry (201, 202) of the batten (200) extends in the longitudinal direction of the batten and/or in the cross-section of the batten (200) has an outer contour which is adapted to an inner contour of the at least one groove-forming reinforcing corrugation (105, 106) of the edge profile (101).
 10. The frame formwork system (300) as claimed in claim 8 or 9, wherein the batten (200) comprises on the side which faces away from the projecting geometry (201, 202), at least one groove-forming reinforcing corrugation (203, 204), which extends in the longitudinal direction of the batten, for receiving a projecting geometry (201, 202) of a further batten (200) and/or a sealing element. 11 The frame formwork system (300) as claimed in one of claims 8 to 10, wherein the batten (200) is a hollow profile and/or comprises two oppositely profiled side faces (205, 206) and two end faces (207, 208) which connect the side faces (205, 206), wherein the end faces (207, 208) are of the same or different length in the cross-section of the batten (200).
 12. The frame formwork system (300) as claimed in one of claims 8 to 11, comprising: a plurality of battens (200) which can be brought into engagement with one another and with at least one edge profile (101) of the frame (102) of the frame formwork element (100) and preferably differ from one another in terms of their widths (b1, b2, b3).
 13. The frame formwork system (300) as claimed in one of claims 8 to 12, comprising at least one batten (200) for positioning a frame formwork element (100), wherein the batten (200) comprises at least one opening (210) for receiving a fastening means (211), for example a screw or a bolt, wherein preferably the opening (210) is arranged in a lowered area (212) of a projecting geometry (201) of the batten (200).
 14. The frame formwork system (300) as claimed in claim 13, further comprising: a tension strap (213) which is fastened or can be fastened to the batten (200) with the aid of the fastening means (211) and which can be fastened at the other end in the same manner to a further, parallel batten (200), so that a distance (a) between the two compensating battens (200) can be predetermined by means of the tension strap (213).
 15. Use of a batten (200) having at least one projecting geometry (201, 202) in a frame formwork system (300) as claimed in one of claims 8 to 14 for positioning a frame formwork element (100) and/or for coupling two frame formwork elements, wherein the batten (200) is arranged on the frame outer side on an edge profile (10) of the frame formwork element (100) and the at least one projecting geometry (201, 202) is brought into engagement with a groove-forming reinforcing corrugation (105, 106) of the edge profile (101). 